Java solutions.

Component Launcher

A window with buttons to launch sub components. Example MyWorldMenuWindow.

Extracting metadata from photo files

For a library for extracting metadata from photo files, there seem to be two main candidates:

• Drew Noakes: metadata-extractor (https://drewnoakes.com/code/exif/)
• Apache Commons Imaging (https://commons.apache.org/proper/commons-imaging/)

I’ve chosen to use Apache Commons Imaging, because it supports updating the metadata in photo files.